Embroidering-machine.



J. A. GROEBLI.

EMBROIDERING MACHINE.

APPLICATION FILED JULY 9.1915.

Patented Nov. 20, 1917.

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J. A. GROEBLL EMBROIDERING MACHINE.

APPLICATION FILED JULY 9,1915.

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J. A. GROEBLI.

EMBROIDERING MACHINE. APPLICATION FILED JULY 9, 1915.

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J. A. GROEBLIL. EMBROIDERING MACHINE. APPLICATION FILED JULY 9,1915.

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EMB ROIDERlNG MAQHlNE. APPLICATIQH FILED lULY 9,1915.

?atente& Nov 20, 1917.

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' Iva wen @011- @6041 xf/Q w @FFT@@ JOSEPH GROEBLI, OF NEW YORKQN. Y.

:To all whom it mag concern Be it known that I, JOSEPH A. Gnonem,

a citizen of the United States, and a resident of the city, county, and State of New Yorlnlmve invented certain new and useful. Improvements in Embroidering-Machines, of whichthe following is a specification. V a The present invention relates to embroidering machines .of the large type wherein the fabric is supported upon a tambour frame which is moved in a definite plane so that the needles, operating in definite paths, will pierce the fabric at different locations to form stitches arranged to constitute an embroidered design. i In such machines, it iscustomary to arrange a supply of fabric upon the rollers and to shift the fabric from time to time to bring new portions thereof before the needles, whereby a number of rapport rows of embroidery may be worked upon each piece the lateral and vertical tension from the fabric, shift the fabric and then apply lateral and vertical tension thereto. In the present case, I have shown mechanism for releasing the tension, shifting the fabric and again tensioning it. Some of the mechanism herein shown is shown and described in U. S. Patent No. 1,210,798, dated January 2, 1917, and cross reference-may. be made to that patent for the purpose of simplifying the present case. The parts herein which correspond with parts in said case will be similarly numbered, though allrsuch parts will not be specificallyreferred, to herein.

The object of my present invention; is to provide very simple and positive mechanical means for initiating the operation of the devices for performing the different functions in the untensioning, shifting and, tensioning of the fabric. This branch of my invention is so constructed and operated der, interfered with accidentally by. any

action of the attendant. l p Another object ofmy invention is to pro- EMBROIDERING-MACI-IINE.

' Specification of Letters Patent. Patgn'ted N 24], 19317,,

c I Application filed July 9, 1915. SerialNc. 39,019. A

than the other and for permitting the tension of the fabric to overcome the applici t1on of the operating force upon the faster ll'lOVlIlQ roller while the other roller continues to operate.

7 Another object of my invention is to provide a very etficient fabric measuring device for determining. the extent of the fabric shifting operation,

means for rendering the fabric measuring device inoperative while the fabric is being shift-ed backwardly or in a direction reverse to its automatic shifting movement.

Another object is to provide means, such as a brake, for preventing the device which renders the devices for performing different functions operative, from throwing over too far and thus initiating the several functions out of the desired sequence. .Another object of the invention is to provide for the initiation of a device for affecting the fabric by such other fabric affecting device as will produce the best results.

In the drawings forming part of this application,

Figure 1 is an elevation of an embroidering machine embodying my invention looking at the front or needle side of the machine, and in whichview, the stitching devices are omitted,

Fig, 2 is a rear elevation of the tambour frame and associated parts,

Fig. 3 is a plan view of the controlling devices forming part of the present invention,

Fig. 4 is a detail view of the lateral tension device, a y

Fig. 5 is a sectional view, taken on the line 5-501. Fig. 3, but with additional ision' controlling device and part of the device through -whiclrone fabric device initiates the operation of another,

F1g.8 1s a plan view thereof, wlth a portion of the fabric shifting controlling mech- .anismincluded, ,vide' a very simple andeflicient device for operating one fabric roller of a pair, faster rods,

Another. object is to provide automatic Fig. 10 is a detail view of the block which is acted upon by the initiating rods,

Fig. 11 is a partial end elevation looking at the right hand end of Fig. 3,

Fig. 12 is an elevation of the side tension Fig. 18 is a plan View of the lever which is actuated by the trip on the dial.

Figs. 19 and 20 are perspective views of certain levers and their connecting rods,

Figs. 21 and22 are edge views of certain of theleve'rs, i

' Fig. 23 isa detail View of the braking and stopping device for the intermittently moving shaft,

Fig; 2 1 is a detail view of a device for permitting of, a slipping action of a' shaft in relation to another shaft by which it is operated, r Fig. 25 is a fragmentary view showing the pawl device which appears in Fig. 24:,

Fig. 26 is a detail view, of the trigger resetting device,

V Fig. ,27 is a similar view of the same and additional parts showing them in the position when the trigger has been reset,

' Fig; 28 is a detail view of the device for setting the fabric measuring device into and out of operation, Fig. 29 is a detail view of a lever movement, and

Fig. 30 is a detail view showing the coupling between a lever and its rod.

Many of the parts herein shown are similar to those shown in my saidpatent, and it may be here stated that all of the mecha- 'nism' shown in said patent may be used in the machine except those parts which have been superceded by others herein, if desired. But it is to be understood that the present invention is not limited in application to a 'Inachine embodying the subject of said patent.

Referring more'particularly to Figs. 1, 2

and 5, it will be seen that I have shown the conventional form of embroidering machine which consists, primarily, of a rigid, stationary framel consisting of end standards "and longitudinal frame members. The tambour frame 2 suspended from the rigid "frame by meansof a counterbalancing and parallel motion device 3so that the tambour frame may be readily movedin any direc- "tion ina vertical plane; and, since the counterbalancing and parallel motion device and machine in Fig. 2.

The tambour frame may be operated either by a pantograph or automat and for convenience I have shown a pantograph 1 which is moved by the operator in accord .ance withthe design held onthe pattern board 5.

' .The tambour frame herein shown com-' prises the usual longitudinal and vertical bars rigidly connected tofoi'm a rectangle; and the fabric supports or rollers 16 are mounted uponthe tambour framefi These rollers may, in accordance with general practice, comprise an upper-roller 16 and a lower roller 16 constituting the upper pair, and'an upper roller 16 'an'dia' lower roller 16 constituting the lower pair, all of which are revolubly supported on the tambour frame.

A piece of fabric 16 is stretched between each pair offrollersin position to be acted upon-by the stitching devices, inore or less of asupply of the fabric being wound upon one or both of the rollers.

" The fabric is shifted by turning the rollers, and in the present construction I prefer to operateall the rollers from a common source. There is a'longitudinal shaft 10 shown mounted in bearings on the upper partof the tambour frame and it comprises the section 10 and the section 10 in alinement therewith, and the former is operated from a shaft 22 connected thereto at one end by a'knuckle joint 23, The connections of the shaft 22 will be tracedbackto the source of power hereinafter] I V The shaft member 10 has a worm 11 which operates a worm gear 12 on the upper end of the vertical shaft 13. 'The latter shaft has worms 15, each of which operates a worm gear 14 on the end of a lower roller of a pair. By means of these connections the motion of the shaft section 10 in either direction ispositively transmitted to the lower fabric rollers. The terms lower and upper rollers are only used to distinguish onef'rom the other for the sake of clearness, it being understood that the operating connections might be reversed if desired; that is, the connections here described for the lower rollers mightbe made with the upper The shaft-member 10 has a worm 11? which acts-upon a worm gear 12 secured to the vertical shaft 13 at the left side of the worms 15 which mesh with the worm gears This latter shaft has 1 1 on the ends offlthe upper rollers of the pairs. By these connectionsjthe'movement ofthe shaft 10 in either direction is imparted to the upper rollers of the pairs. The worms 1 1 and worm gears '12 arecf action'as hereafter set forth. 'ence in speedof the rollers is to insure some tension in the fabric while it is being shifted, so that it will not droop and wrinkle. This greater pitch than the Worms 11 and worm gears 12, 11 1'0lClGI' that the upper rollers of the pairs will be revolved faster than the lower rollers except when there is a slipping This diiferis made necessary by the fact that the rollers at d fferent times have relatlvely different quantities of fabric thereon and the dimneters of the rollers and their fabric vary.

The shafts 10, 10 are driven by the shaft 22 which latter is operated by the source of power, and these two shafts 10, 10 are made relatively yieldable. For this purpose I have loosely arranged a friction disk 290 preferably madeof fiber on the shaft 10 and on the same shaft l0 there are secured t'wo cooperatingdisks 291, 291 one on each side of the friction disk 290, the disk 29h being slidable-onshaft 10 The disk 291 is pressed against the friction disk 290 by a spring 292 arranged around the shaft 10 The tension of the spring 292 may be adjusted by changing the position of the collar 293WVl11Cl1 presses on one end of the spring, so that the yieldable action may be varied to alter thet'ension under which the fabric is to be shifted. The friction between the disks 290, 291 and 291 is suflicient'to cause the shaft 19 which operates the upper rollers of the pairs, to turn these rollers until the tension upon the shifting fabric reaches the desired maximum and then the shaft'l0 will slip or yield in relation to the shaft 10 until the fabric has been let off the lower rollers sufficiently to permit the upper rollers to resume their movement with the fabric under the desired maximum tension;

The friction disk is driven by forked arms 290", secured to shaft 10, which enter notches290 in the periphery of the friction disk 290, so that the friction disk rotates with shaft 10, although it is mounted on shaft 10 In my Patent No. 1,116,693, I provided for a yieldable action, but in the present arrangement but one very s mple yleldable device need be used.

There is a ratchet wheel 29% on disk 291,

and there is a pawl carried by the forked arm and cooperating with the ratchet wheel. )Vhen the shaft 10 ope'ates to shift the fabric from the lower to the upper roller (in the instance illustrated) the pawl 295 escapes over the teeth of the ratchet 29 i and the shaft 10 is yieldably driven through flue-disks 290, 291. But when the shaft 10 tie-reversed, as when the fabric is shifted liackwardly, then the pawl 295- engages a teeth of the ratchet29i'andthe shaft 10 is thuspositively dr1ven, until such time as the shaft 10 is again reversed. Thus the faster may be raised and lowered.

, gear 9 on tl threaded portion of a vertical shaft 296 guided in a bracket on the tambour frame. The latter shaft is connected with a bar 297, which latter, as well as shaft 2 (3 are adapted to be raised and lowcred but not rotated. The bar 29. has

lateral arms 298 embracing the shaf 13 and these arms engage above and below the worm 15 so that, when the bar 297 is raise or lowered the shaft 13 and worms 15 are likewise raised or lowered. By this means a partial rotation may be given to the lower rollers the pairs in order to partially re- .move the tension from the fabric preparatory to shifting it, or in order to apply the final tension to the fabric after it has been shifted. i

There are brackets 286 mounted upon the bar 285 which is held in the tambour frame, and the bars and brackets may be arranged at any desired intervals along the machine. "he bracket 286 engage the lower rollers 16 (or the fabric wound thereon) and prevent these rollers from being drawn up out oftrue between their ends, and they serve the same puoose as the brackets 286 in my said first mentioned patent.

There is a rod 282 which is slidable in the bracket 28]. and also in an arm 288 secured to the rod 285, so that the rod .282 The shaft 9 has a worm 279 which operates a worm gear 280 having a threaded connection with the rod 282. Sn the rod 282 there are ar ranged brackets 283 which engage under the upper rollers 16 (or the fabric wound thereon) to hold the rollers true against the tension of the fabric, similar to the brackets 283, in my first mentioned patent. Thus the rotation of. the shaft 9 will either press the brackets 283 against the upper rollers to keep the rollers and fabric true, or disenthe brackets to permit the fabric to be shifted.

Th lateral tension devices on the tambour frame may be the same as in my first mentioned patent. There are pressure members 15% arranged at the rear side of the machine and near the opposite edges of the fabrics. These comprise the individually yieldable rollers 15-1 which press on the fabric and which are adapted to revolve On the front side of the machine are arranged the traction or propelling rollers 152 which are carried upon the shafts 19 and the fabric is pressed against these rollers by the rollers 154 so that when the former revolve they will tighten or loosen the fabric. There is a longitudinally ar-, ranged shaft 8 which is operated by a shaft '20 through the knuckle joint 23, and this shaft carries worms 17 which operate on the worm gears 18 to drive the shafts 19 which carry the traction rollers.

The parts thus far described correspond with my first mentioned patent, except the devices for making the drive of the fabric rollers yieldable.

Before passing from the devices associated with the tambour frame reference will be made to a portion of the fabric shifting device. At one end of the machine Ihave shown a roller 217 which is carried upon a shaft 214 j ournaled in the swinging bracket arms 215. This roller is movable into and out of contact with the fabric on the uppermost roller 16 and it preferably has a rough surface so that it will be turned by the fabric on the roller. Since it engages with the fabric and turns in accordance with the surface travel of the fabric it measures the amount of fabric shifted for the purpose of automatically terminating the shifting operation. There is a spring 218 which exerts a downward pressure on the bracket arms 215 to press the roller 217 on the fabric. The shaft 299 is connected to shaft 214 by the knuckle joint 300. The bar 297 which serves to release and apply the final vertical tension on the fabric has an arm 214 which engages under one of the bracket arms 215. WVhen the bar 297 moves downwardly to release the tension of the fabric preparatory to shifting, the arm 214 which moves therewith allows the roller 217 to be drawn down upon the fabric roller by the spring 218. WVhen the bar 297 moves upwardly to apply the final vertical tension the arm 214 disengages the roller 217 from the fabric. Thus the measuring roller 217 only engages the fabric while the shifting operation is taking place.

As a feature of my present invention I have shown means for throwing out the measuring device when the fabric for any reason is being shifted backwardly or in the reverse direction to its automatic shifting movement. This allows the fabric to be shifted backwardly without disturbing the condition of the automatic measuring device. It is preferably accomplished by disengaging the measuring roller from the fabrlc when the latter moves backwardly. I have arranged loosely on the side tenslo-n "device shaft 8 a sleeve 301, which has an arm '302 having a concentric portion 303. There bar 297.

is a roller 304 secured on the fabric-shifting shaft 10 which engages the concentric portion 303 for. the purpose of rocking it either way, according to the direction of motion of the shaft S. There is adepending link 305having a hook which is arranged to lift the shaft 214 and measuring roller 217.

fabric forwardly,the roller 304 will reverse the motion of the concentric member 303 and allow the measuring roller to again engage the fabric under the action of its spring. From then on, anduntil the fabric is to be shifted backwardly again, the measuring device will operate as first described. The measuring device is thus automatically rendered inoperative during backward shifting of the fabric. This operation in no way interferes with the automatic disengagement of the measuring roller caused by the The controlling devices are mounted upon a bed plate 6 supported by the. brackets 7.

The shaft 25 corresponds with the shaft 25 of my first mentioned patent and it is provided with the same arrangementof clutches and gears. The levers. and links for operating the clutches are also the same as in said case. The shaft 25 may be operated by the I motor 26 through the gears 27, 28.

The shaft 22 by which the fabric shifting device is operated has a gear 31, which meshes with the gears 29, 30, and this shaft is operated in one direction or another, according to whether the clutch 34 or the clutch 41 is thrown in, it being idle when both clutches are out.

The shaft 51 through which the said tension devices are operated has a gear 50 in mesh with the gears 48, 49 and this shaft is operatedin one or the other direction according to whether the clutch 54 or the clutch 59 is thrown in.

The shaft 67 through which the vertical tension devices are operated has a gear 66 which meshes with the gears 64, 65 and this shaft is operated in one or the other direction according to whether the clutch 70 or the clutch 74 is thrown in.

There is a block 157 threaded onthe side tension device shaft 51 and it is held from rotating by the rod 158 so that the turning of the shaft 51 will move the block to the right or left. There is a shaft 159 below the block, which is shiftable "in the direction of i a aaea its length. This shaft 159, has a contact .member 160 with which the block engages at one end of its travel and a contact member 161 threaded on the shaft 159to be adjusted to different positions thereon. There is a three armed lever 306 fulcrumed on a pin 307 and it has-one arm engaginga notched collar 308 on the shaft 159. The otherarm has notches 309 to receive the spring pressed catch 310 for holding the lever in either of device, as will be more fully described hereinafter. Down to the lever306the side tension device may be the same as in my said first-mentioned patent, but the gear 223 is here shown mounted on the shaft 51-instead of the shaft 8.

There is a shaft 78 at right angle to the shaft 25 and it is operated step. by step as the different functionsare initiated, the same as the corresponding shaft in my said first mentioned patent. There is a crank 113 on. the shaft25, which operates through a pitman ll l to rock the arm 115 and on the hub of the latter there is a lever arm 118 Which at certain times engages and moves a lever 122 having a roller 135' engaging the double cam surface of a member 136 arranged on the shaft 7 8. The member 136 carries an arm 137 which is provided with a pawl 138 on its outer end, which is adapted to engage the teeth of a ratchet disk 1 10 arranged on the shaft 78. The arm 122 which has the roller 135 is provided with a pawl 123 having' an engaging projection 124. The arm 118 has shoulders119. 120. either of which may be engaged by the part 12 1 according to whether the arm 118 is moving to the right or left when the pawl 123 drops.

The pawl 123 is held up out of the path of the arm 118 by a crank pin 128 carried on a shaft 129. The latter has a tripping arm 130 which is adapted to be held up by a trigger 1 31, so that the pawl 123 will have no active engagement with the arm 118 until this trigger is tripped. When the trigger is tripped and the arm 1330 allowed to go down, then the shaft 129 rocks and allows the pawl 123 to fall. This will bring the projection 124 into the path of either the shoulder 119 or shoulder 120, When this engagement takes place the arm 122 will move with the arm 118 to the right or left, and the roller 135 will rock the member 136, This will operate ough the pawl pawl 138. There isa shaft 320 which is revoluble,

138 to advancethe ratchetdisk 14 0 and the shaft 78 one step which will terminate one function and initiatea succeeding one, as

set forth in my said first mentioned patent. The crank pin 128 is acted upon by the curved surface 127 of an extension 126 of the lever 122 so that upon the return'of the arm 122 the shaft 129 will be rocked to lift the trip arm 130 up into position where it will again be engaged by the trigger 131,

ready for a succeeding operation.

In order to prevent the shaft 78 from being advanced more than one step at each operation of the pawl 138 I have provided a brake for the shaft. On the shaft 78 there is fixed a brake disk 313 having eccentrlc surfaces 311 and corresponding shoulders 319. A lever 317 fulcrumed at 318 is pulled upwardly by the spring 316 which pulls downwardly onthe pawl arm 137, and the lever 317 carries a brake shoe 315 which presses on the eccentric surfaces 314 to prevent the shaft 78 from moving too freely, and it also abuts against the shoulders 319 to definitely stop the shaft at each step and to hold it there and also reciprocatablein the direction of 9 its length, and one end of which is adapted to engage the trigger 131 for the purpose 1 of tripping it from the arm 130 to accomplish the above mentioned advancement of the shaft 78, whenever the shaft 320 is rev ciprocated.

In order to revolve the shaft 320 step by step in accordance with the step by step movement of the shaft 78, I have provided a gear 321 on the latter which meshes with an intermediate gear 322'; and this latter gear in turn meshes with the gear 323 on the shaft 320. In this manner the shaft 320 is partially turned at every advance of the shaft 78.

The hand lever 111 by means of which the mechanism is initially started, closes a switch 107 which starts the motor 26, the sameas in my said first-mentioned patent. There is a cam projection 325 having a curved surface, arranged on the side of the gear 323 and on the lever 111 there is a cam projection 324: cooperating with the projection 325. When the hand lever is rocked to start the machine the projection 321 acts on the projection 325 to shift the shaft and thus trip the trigger 131. This will initiate the first step of the rotation of the shaft 78 and the starting of the first function. After this the tripping of the trigger will be caused automatically by the various devices.

during the return of the The shaft 320 is journaled in the bracket 326 which holds the gears 322, 323 and also in a bracket 327. There is a spring 328 coiled. around the shaft confined i 337 lying above between a pin 329 and the bracket 327, the purpose of which spring is to return the shaft 320 after it has tripiped the trigger.

There are shown five di erent rods 330, 331, 332, 333, 334 slidable in holes in the bracket 327 and arranged in a circle, the

sixth point of which is left blank to allow .for one initiating movement to be made by 'the hand lever previously explained. These shown.

The two rods 330, 334 which lie about opposite each other are fulcrumed, respective1y,to the arm 336 and the arm 337 of a lever 338 which rocks on a stud 339. The rods 331, 333 which lie about opposite each other and just above the rods 330,335 are fulcrumed, respectively, to the arm 340and to the arm 341 of a second lever, arranged to rock on the stud 339, the arms 336 and the arms 340, 341. The fifth rod 332. is connected with a member of the fabric shifting controlling device. The lever 342 has a third arm 343 to whichis fulcrumed a link 344, and the latter is fulcrumed at its other end to an arm 345 on Y the lever 346 of the vertical tension control.

The lever 338 has a third arm 347 to which is fulcrumed the link 312; and the other end of this link is fulcrumed to the arm 311 of a lever of the side tension controlling the fabric movement. The measuring dial 7 226, having teeth 229 on its periphery, is

device.

In connection with the vertical tension control there is a rod 348 sliding in the stud 204 and it is. fulcrumed to an arm 349 on a rocking shaft 350. The latter, as will appear, serves to lock and unlock the measuring device. The block 351 on the rod 348 is arranged to be engaged by the block 197, which travels along the threaded shaft 196, when the block 197 about reaches the end 0 its travel in one direction.

The power for shifting the fabric is, as

previously described, transmitted through the shafts 22, 10, 10.. Themeasuring roller 217 which is turned according to the extent the fabric is being shifted, transmits its motion through the shafts 214 and 252 to a spiral gear 222., and the latter meshes with a spiralgear 221 fast on the shaft 220 of the shifting controlling device; so that the latter shaft is turned in. accordance with also fast on'this shaft 226. The tripping member 227. is held on the shaft 220- by'a thumb nut 230 .at any desired angular displacement with the measuring dial from a zero or starting position, with its teeth 228 engaged with the teeth of the dial 226.

The tripping member 227 is adapted to act 7 upon the lever 231 in opposition to its spring 232. i This lever is connected by a link 353 y with an arm 354 of alever which is loose on e a shaft 355.. Anotherarm 356 of this lever is connected with the rod 332 which is one of the rods for shiftingthe shaft 320. hen the dial 226 has been turned in accordance with the movement of the measuring roller sufficiently to bring the trippingmember 227 into engagement with the lever 231 the latter will be rocked. This action willbe transmitted through the link 353 and lever 354, 356 to the rod 332,'and through the parts previously described, the shaft78 will be shifted one step to cause the ending of the fabric shifting function and the starting of a succeeding function.

There is a lever having an arm 357 and arm 358, the latter having a weight. 7 The arm 357 carries a lever which is fulcrumedthereto at 359. One arm 360 of this lever is adapted to lie in a recess 239 of a disk 240 which is mounted upon the bracket 361. The arm 360 of this lever is adapted to enter therecess 239 upon the return movement of the dial, and to arrest the latter always at the same position. The other arm 362 of this lever has a double slanting surface 241 with which the pin 363 on an arm 225 engages. The

latter arm is loose on the shaft 220 and its hub has a worm gear 224 which is operated by a worm 225 on theshaft 51 of the side tension controlling device.

011 the shaft 355 there is journaled a lever, one arm 3 64 of which is adapted to abut against the end of the arm 357 to hold the shaft 220 and dial 226 against rotation until such time as the arm 364'is tripped. The other arm 3650f this lever is drawn in one direction by a spring 366 to engage the arm 364 with the arm 357 and it is adapted to be moved in the otherfd'irection by the lever.

arm 366 fixed on the shaft 350, which, as

above set forth, is operated by the vertical tension controllingdevice. The other arm 367 has a pin 368 engaging in a slot in one lever arm 364 and lock the lever 357.

Except for the differences herein shown and described the entire machine maybe the same as in my'said first mentioned patent and for any details not herein shown or .end of the lever 369 which has another 365 and permit the spring 36,6 to move the g described with sufficient completeness reference maybe made to said patent.

Operation.

vertical and lateral stress, and the initiating device will be in the idle or Zero position, the motor being at rest.

The operator will first position the tripping member 227 on the dial 226 according to the extent of the fabric is to be shifted. The operator then swings the hand lever 111. This will close the switch 107 and start the motor 26. The shaft 25 and the several gears attached to it will now revolve, and

the pitman 1161 will rock the arm 115. The throwing of the lever 111 as above described, brought the cam portion 3241 on this lever into active engagement with the cam portion 325 of the gear 323 and it caused the latter and its shaft 320 to be shifted and the trigger 131 to be tripped. This permitted the arm 130 to fall, thus rocking the shaft 129 and allowing the pawl 123 to come into engagement with the rocking arm 118. When the pawl 123 engages one of the shoulders 119 or 120 the arm 122 will be moved to the right or left by the arm 118 and the roller 135 will act upon the yoke cam 136 to rock the arm 137 which carries the pawl 138. The latter will act on the ratchet wheel 140 and advance the shaft 78 and its associated parts one step. The arm 137 is retracted by the spring 316 which also actuates the brake device.

The first step of the shaft 78 will serve to lock the lever 111 (as set forth in my said .first mentioned patent) so thatthe motor willbe continued in operation until the several functions have been performed; and it will also serve toinitiate the operation of the shaft 51, in the direction necessary to release the side or lateral tension devices, and this is accomplished in the same manner as set forth in my aforesaid first mentioned patent. The shaft51 will operate'through the shaft .8 to first turn the traction rollers 152 in the directions necessary to loosen the lateral tension of the fabric, and at the very beginning of this operation the arms 276, which carry the pressure rollers 15 1, are

swung out to release the fabric preparatory to being shifted. While this tension releas-' ing operation is taking place the threaded portion of the shaft 51 is moving the block 157 to the left in Figs. 12 and 14; and when this block contacts with the contact member 160 it shifts the latter and its shaft sufficiently to throw the "lever 306. The latter, in thus swinging, will operate through the link 312 to swing the lever 338. When the shaft 78 was turned, as previously described,

upon the starting of the machine, the shaft 320 was likewise turned one step, through the gears 321, 322, 323, and this brought the block 335 from the position shown in Fig. 9 to a position in lin with the rod 330. The block 335 is turned in this manner each time the shaft 78 is turned a step, and in this manner it is successively brought into line with the several rods 330.33%. It is to be noted that, following the tripping of the trigger 131 and the falling of the arm 130, the latter was again raised into engagement with the trigger again. This was accomplished as in my aforesaid first mentioned patent, by the curved surface 127 of the on tension 126 acting on the pin 128 to turn the shaft 129, thereby moving the arm 130 into engagement with the trigger and moving the pawl 123 out of engagement from the arm 118.

The swinging of the lever 338 in the manner above set forth, caused the rod 330 to ad vance against the block 335 and thus the shaft 320 was reciprocated. This tripped the trigger 131 a second time, and the shaft 78 is advanced a second step in the same manner as before. This advancement of the shafts 78 and 320 also advances the block 335 to bring it into line with the rod 31 by which latter alone it can then be operated.

This last mentioned turning of the shaft 78 terminates the unloosening of the lateral tension devices and it initiates the operation of the vertical tension devices in the direction necessary to release the vertical tension. In the above-mentioned loosening of the lateral tension devices the shaft 51 of that device operated through the worm 223 and worm gear 224 to turn the arm 225 in order to bring the latter into position where it i can afterward return the dial device.

The second step of the shaft 78 having taken place, the lateral tension device is now idle,

with the lateral tension members disengaged from the fabric and the vertical tension device has commenced to operate in the direction necessary to release the vertical tension. During this last mentioned operation the shaft 196 is causing the block 197 to move to the right in Figs. 7 and 8; and when this block engages the member 351 it will coinmence to shift the rod 348. Toward the end i of this movement the rod 3-18 and the arm just preceding the operation of shifting the fabric the shifting device is unlocked just previous to its initiation.

- The above mentioned rocking of the shaft 355 also rocked the arm 367 and as the latter engages with the arm 369 it moves the latter to turn the arm 370 and leave it in the path of the end of the arm 225 for a vertical tension device out of operation and the fabric shifting device into operation, and

it will bring the block 335 into line with the rod' 332, while, when the vertical tension devices are released, that is, while the bar 297 was moved downwardly the arms 215 were allowed to move downwardly under the action of their spring 218 and the measuring roller 217 was thus brought into contact with the fabric on the uppermost roller. The shifting device is now operating.

' The fabric will now be shifted by the operation of the shafts 22 and 10, 10 acting through the worms and worm' gears. The upper rollers, which are receiving the fabric, operate faster than the lower rollers, so that the fabric is shifted under some tension. If this tension increases above the desired maximum then the disks 291 and 291 will slip in relation to the disk 290 and the shaft 10 which operates the receiving rollers will remain idle until enough fabric has been released to relieve the tension, whereupon all rollers will turn.

During this shifting of the fabric it acts to turn the measuring roller 217 according to the extent the fabric moves. This motion is transmitted through the shafts 21 1 and 252 and through the spiral gears222 and 221 to the shaft 220 which carries the dial.

The dial will thus be turned until the tripping member 227 thereon acts to trip the lever 231. This lever operates through the link 353 to turn the lever 354-356 and the latter in turn forces the rod 332 against the block 335 which is now in line'therewith. This latter action shifts the shaft 320 to trip the trigger 131. The shafts 78 and 320 will now be advanced another step and this will terminate the operation of the fabric shifting device.

If it is desired to shift the fabric a greater extent than that caused by the automatic device it may be done by manipulating the hand levers in the manner set forth 'in 'my aforesaid first mentioned patent. If, stead of shifting the fabric in the tllfeCtlOIl in which it was automatically shifted, it is shifted backwardly the measuring device will be rendered inoperative during such backward operation. In that case the shaft '10 will operate in a reverse direction and 303 back again and allow the measuring roller to reengage the fabric. 7

If no other shifting than the automatic one is required then the hand levers will remain as originally set, and when the fabric shifting has been completed according to the measuringdevice, the mechanism will continue with the next succeeding function, which will be the tightening of the vertical tension devices. p

WVhen the dial turned to the right in Fig. 15, in the above-described shifting opera tion, the lever 357 turned with it, thus carrying the lever arm 360 out of the recess 239 in the fixed plate, and while this arm 360 is held on the periphery of this fixedplate 240 the projection241- of the arm 362 lies,

in the circular path of the pin 363 on the arm The rod 332, as above described, pushed the block 335 .and this advanced the shafts 78 and 320 and this terminated the shifting operation and initiated the vertical tension devices. The latter will now operate in a direction reverse totheir previous operation and this will tighten the brackets283 and lift the worm shaft 13 to apply the vertical tension to the fabric. V V

During this operation the block 197-will travel to the left in Figs. 7 and 8. After that the lever 345 will be thrown either by the tension of the fabric devicesactuating the yoke 174 to move the disk 175 against the arm 346, or else the block 197 will contact with the trip block 200 and shift the shaft 199. In either event the lever 345 will be thrown, as set forth in my said first mentioned patent. The throwing of the lever345 will be in a. direction reverse to that previously described, and the link3-f4e and the arm 3 13 will throw over the lever 342. This will retract the rod 331 ready for a subsequent operation and itwilladvance the rod 333 against the block 335 and thus the shafts 7 8 and 320 will be advanced another step. This will terminate the vertical tensioningoperation and initiate the next func eration. This will cause the pressure rollnaraaee ers 154 to be closed against the traction rollers 152 and it will cause the latter to turn in the directions necessary to tighten the fabrics, During the tightening operation of the lateral tension devices, the. block 157 will travel from left to right in figures 12 and 14. When it strikes the member 161 it will shift theshaft 159 and throw the lever 306. This will act through the link 312 to throw the lever 338, and as a result, the rod 330 will be retracted and the rod 334 will be advanced against the block 035. This latter operation will shift the shaft 78 and initiate the turning of shafts 78 and 320 another step. It will terminate the lateral tensioning operation and also restore the mechanism to the same condition as before the hand lever 111 was thrown, and the motor and all parts of the device will remain idle until the lever 111 is again turned down by the operator. The mechanism has completed all its functions. The fabric has been untensioned, shifted and retensioned. During the above described tightening operation of the lateral tension device the shaft 51 operated in the reverse direction to its first-described movement, and in so turning it operated through the worm 223 and worm gear 224 to turn back the arm 225. At some point in the return movement of this arm 225 its lateral pin 363 engages one of the slanting surfaces of the extension 241, the point'of engagement depending on how far the dial device moved in the shifting operation. This engagement is possible because the projection 241 is in the path of the pin 363 whenever the arm 360 is out of the slot 239, as is the case after a shifting operation. After the pin 363 engages the projection 241 the lever 360 will swing around with the lever 237 until the arm 360 drops into the recess 239 and arrests, its movement. At the same time, the arm 362 swings until the projection 241 is free of the pin 363, whereupon the arm 225 may continue to turn without aifecting the lever 357. When the arm 360 enters the recess 239 the arm 357 will have passed the locking arm 364 and the latter Will reengage therewith as shown in Fig. 15 and lock it in one direction. a

The engagement of the locking arm 364 with the arm 357 is caused by the end of the arm 225 striking againstthe nose of the arm 370, thereby throwing the other arm 369. and the lever 366-367 in away to disengage the latter from the inclined end of lever 365. Having described my invention, what I claim is: V

- 1. An embroidering machine having a tambour frame and fabric rollers arranged to receive the fabric one from the other, shafts arranged longitudinally of the tambour frame, one of said shafts operating the receiving roller and the otherthe delivery roller, and yieldable operating means interposed between said shafts.

2. An embroidering machine having a tambour frame and fabric supporting rollers arranged in pairs and the rollers of each pair being adapted to receive the fabric one from another, shafts arranged longitudinally of the tambour frame, one of which shafts operates the lower roller of each pair and the other of which shafts operates the upper roller of each pair, and yieldable operating means interposed between said shafts.

3. An embroidering machine having a tambour frame and fabric rollers arranged to receive the fabric one from the other, shafts arranged longitudinally of the tambour frame and adaptedto operate, respectively, the receiving and delivery rollers, positive means for operating one of said shafts and yieldable means for operating the other of said shafts.

4. An embroidering machine having a tambourframe and fabric rollers arranged to receive the fabric one from the other, and means for operating said rollers, including 96 means for positively operating a roller in one direction and for yieldably operating it in a reverse direction.

5. An embroidering machine having a tambour frame and fabric rollers arranged to receive the fabric one from the other, and operating means therefor, comprising means for yieldably operating one roller and for positively operating the other roller, in one direction and for positively operating both rollers in a reverse direction.

6. An embroidering machine having a tambour frame and fabric rollers arranged to receive the fabric one from the other, operating means therefor, including means for 105 operating one roller faster than the other and means for yieldably operating the faster roller in one direction andfor positively operating it in the other direction.

7. An embroidering machine having a 116 tambour frame and fabric rollers arranged to receive the fabric one from the other, 019-, erating means therefor, including means for operating one rollerfaster than the other and means for yieldably operating the fas- 116 ter roller in one direction and for positively operating it in the other direction, and means for positivelyoperating the slower moving roller in both directions.

8. An .embroideringmachine having a ran tambour frame and: fabric rollers arranged to receive the fabric one from the other, and operating means therefor, including. slip pable members for operating one of the rollers in one direction and a pawl and ratchet 4% device for causing. said roller to be positively operated in the reverse direction.

f 9. An embroidering machine having a tambour frame,'fabric rollers arranged in pairs and one roller of each pair being we adapted-to receive the fabric from the other of the pair, a shaft arrtiiged"longitudinally of the=tzf1nbourframe andeda'pt'ed to positively operate siinilar rollers of each pair in" elther direction, a second shaft arrangedlongitudinally of the tamboiir frame and adapted to operate the-other roller' 'of each pair'in either direction and faster than those operated y said first shaft, Slippflble be'is for causing said second shaft to be yieldaloly operated by said first shaft in one" direction and "injezt'ris' fo'i causin the second shaft to be positively op'r'ltediri the reverse direction by said 'firstshaft.

lOF-Aii enib10id1ii1g machine havin a m-"mtour frame;- fabric shifting means a'da'pt'e'd id'shift the fabric forwardly i or 1 v bzic'livv'ilrcllv; fabric measuring "means for s backwardly," .f

" shifte controlling theeite'nt'of the fabric shifting "operatibh, and mean for rendering the measuring device inefiectiv'e'wlienthe shiftnigd'evlce 1s' operated in one direction.

11 An embro'idering machine: having I a I ta mhou'r frame, fabric shifting means adapted to shift thefdbi'ic' for v'zirdly '01 back'xvhrdly, and 'fzibric 'm'e'zisurlng' means fdr controlling theextentof the fabric shift ing operation in one direc'tioii'ofilyh 12.A11 embroidering mechine having a taifhbou'r' frame; fabric" shifting means adapted to 3 shift the fabric forwardly of bac'rwardly; fabric 'mea'suringmeans for controlling the cxtent'- of the 'fabri'c shifting operation; and inans'eprate'd bytlie fabric 1 shiftinginezih's" for-"rendering said measur" ing device ineffective when operated ill one direction and for "re toring said 1 measuring device 'vvheii the shifting device is operated l'n' t'he 'other' direction".

a itbricjnzisiirihg, means for cemr lhng th X1 ;e1;1 t cfthe fabric shifting operanqiijagc ncludingia "wherengagin cnefdire'ctidtffaiid for:

when the fabric is deifing' achine having a t'a our frame; j fijloric; shifting mezins" p ed-1w shift" the-fabric fdrwardly or fzihrici mezfslifiii'g means "for V controlling'th'eiteiit'ofthflabric"shifting 7 =4 means operated the vcrtical tension de vice' foi pfittinjg the-"saidcontrolling de'- vice intooperative Co'ndition- 16. An "embrolderlng machinehaving a tainbour frame a fabric shitting dev1ce,a

Vertical tension device, measuring means' for controlling thefifabricshifting operation;

locking means for tlie'zne'ztsuriiig means and adaptedtobe unlocked by sa-id'verticalten- 'sionde'vice. I v V 1?. An emb'ro dering =inach'1ne' having a tanibour' frameya fabric shifting device, a

means fonthe controllin means-,wd aidapfl edto" be unlocked 'by' said vertical tension device, and incans' -actnated by; said vertical tension device forinitiating the op'e'rationof the controllingdev'icew 18. An embroidering machine hQWing -a tambour "frame a; fabric shifting device, 2 1- vertical tQDSiOlf'ClQViCG measuringincans for controlling the gfzibridshifting operationy and-locking nie'unsfor the megisuringmemis ada pted'to bennlockedby the verticegl ten? sion device upon its loosening operation. l

" 19. An-embroi'dering ma chirie ha vi tambour frame, fabric shifting 1neans; meestiring means for controlling the shifting operzition; manually-controlled means for modifying "ofreversingthe fabric shifting op era'tlon andailtoinatlc means for rendering the measuring Thieans inoperative u onthc reversalof the fabric shiftlng operation.

20. An embroidering;machine hav-ing tambour frame; fabric shifting end -fabric tensioning devices, means actu'ated by said I devices,- si'epby step,- to automatically initiate the operation of sai d devices, and'mea'ris for arresting said s ep bystepdevic'eg mg devices; means ac'tu'atedstep by step by said devices to* autcmaticitllyinitiate each' other, and a" brake oper ting on said-st'ep by step device. v 1

22; An embroid ring machineh iving a t mbdur frame, fabricfishiftiiigfan'd tension:

,ing devic 's, and meeins for 'initictiiig the operation thereof, lncludlng a successively advanced In'er'nlg'ur and mechanical meztns actuated by said "shifting tensitfii'ngfievices and operatmg on smdsuecesewel' d tambour frame, fabric shifting and tensioning devices, and means for initiating the operation thereof, including a successively advanced member and reciprocating members actuated by said shifting and tensioning devices and operating on said successively advanced member to control the initiation of said shifting and tensioning devices.

25. An embroidering machine having a tambour frame, fabric shifting and tensioning devices, and means for initiating the operation thereof, including reciprocating members actuated by said shifting and tensioning devices, means common to said reciprocating members upon which they op crate, and means for bringing said common means into operative relation successively With the several reciprocating members.

26. An embroidering machine having a tambour frame, fabric shifting and tensioning devices, and means for initiating the operation thereof, including reciprocating members actuated by said shifting and tensioning devices, means common to said reciprocating members upon Which they operate and means for rotating said common means step by step to bring it into operative relation successively With the several reciprocating members.

27. An embroidering machine having a tambour frame, fabric shifting and tensiorr ing devices, and means for initiating the operation thereof, including levers having a plurality of arms, rods connected With the arms, a reciprocatable member adapted to be acted upon by said rods, means for placing said reciprocatable member successively into operative relation with said rods, said lelers being actuated by said tensioning devices to advance and retract said rods.

An embroidering machine having a tambour frame, fabric shifting and tension ing devices, manually operated starting means, means whereby said shifting and tensioning devices may initiate each other, including reciprocating members actuated by the shifting and tensioning devices, rotative and reciprocatable means operated on by said reciprocating members, means for rotating said latter means to bring it into operative relation successively with the re ciprocating members, said manually operated starting device being adapted to act upon said rotative and reciprocatable means.

Signed at the city, county and State of New York, this 7th day of July, 1915.

JOSEPH A. GROEBLI.

Copies of this patent may he obtained for five cents each, by addressing the Commissioner of Patents, Washington, D. C. 

